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Self-calibration device and method for emission rate coefficient of multi-spectrum radiation temperature measuring system

A technology of emissivity coefficient and radiation temperature measurement, which is applied in the field of optical measurement and sensing, can solve problems such as complex data processing, achieve simple and reliable principles, improve measurement uncertainty, and overcome model errors

Active Publication Date: 2014-03-12
NORTHWEST INST OF NUCLEAR TECH
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Problems solved by technology

However, this method is based on the ε empirical model, which is easily limited by different flame parameters and has a large uncertainty. In addition, the data processing process is relatively complicated.

Method used

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  • Self-calibration device and method for emission rate coefficient of multi-spectrum radiation temperature measuring system
  • Self-calibration device and method for emission rate coefficient of multi-spectrum radiation temperature measuring system
  • Self-calibration device and method for emission rate coefficient of multi-spectrum radiation temperature measuring system

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Embodiment Construction

[0041] like figure 1 As shown, the emissivity coefficient self-calibration device of the present invention includes a wide-spectrum light source 1 and an incident collimating lens group 3 and an outgoing collimating lens group 5 on the outgoing light path of the wide-spectrum light source, and the flame 4 to be measured is arranged on the incident collimating lens Between the group 3 and the outgoing collimating lens group 5, the outgoing light of the wide-spectrum light source 1 is collimated by the incident collimating lens group 3, then passes through the area to be measured of the flame 4, and passes through the outgoing collimating lens group 5 to be coupled into the Spectrometer 6 for multispectral radiation temperature measurement.

[0042] The spectrometer 6 can be a spatial optical interface, and can also adopt such as figure 2 In the shown fiber optic spectrometer, one end of the fiber is connected to the exit of the outgoing collimating lens group 5, and the other...

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Abstract

The invention discloses a self-calibration device and method for an emission rate coefficient of a multi-spectrum radiation temperature measuring system. The device comprises a wide spectrum optical source as well as an incidence collimating lens group and an outgoing collimating lens group which are arranged at the outgoing optical path of the wide spectrum optical source in sequence; a flame to be measured is arranged between the incidence collimating lens group and outgoing collimating lens group. The emission rate coefficient self-calibration system is arranged on the same path, penetrating through the measured flame, of the multi-spectrum radiation temperature measuring system, the emission rate coefficients of the flame under different wavelengths are obtained by recording the spectrum parameters of the wide spectrum optical source, the flame and the combination of the wind spectrum optical source and the flame, and the self-calibration device is used for the parameter calibrating of the multi-spectrum radiation temperature measuring system and overcomes the model error in the traditional theoretical calculation correction, so the measuring uncertainty is reduced.

Description

technical field [0001] The invention relates to the field of optical measurement and sensing, and in particular provides an emissivity coefficient calibration device and method for a spectral radiation temperature measurement system. Background technique [0002] Flame temperature is an important state parameter in the combustion reaction. Using this parameter can better understand the heat energy change in the combustion process, as well as the heat transfer process in the form of radiation, convection and heat conduction in the combustion process. Flame temperature distribution measurement usually has contact method and non-contact method, and the non-contact method is widely used because it introduces less interference to the flame field. [0003] In the non-contact method of temperature parameter measurement, the temperature measurement method based on the principle of spectral radiation is a commonly used method. The temperature value is calculated by measuring the rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/60G01N21/27
Inventor 陈绍武张磊陶蒙蒙刘福华吴勇冯刚赵海川
Owner NORTHWEST INST OF NUCLEAR TECH
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